The difference between Digit and Thumb
When used as nouns, digit means the whole numbers from 0 to 9 and the arabic numerals representing them, which are combined to represent base 10 numbers, whereas thumb means the short thick digit of the hand that for humans has the most mobility and can be made to oppose (moved to touch) all of the other fingers.
When used as verbs, digit means to point at or point out with the finger, whereas thumb means to touch or cover with the thumb.
check bellow for the other definitions of Digit and Thumb
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Digit as a noun (mathematics):
The whole numbers from 0 to 9 and the Arabic numerals representing them, which are combined to represent base 10 numbers.
Examples:
"The number 123.4 has four digits: the hundreds digit is 1, the tens digit is 2, the units digit is 3, and the tenths digit is 4."
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Digit as a noun (mathematics):
Similarly fundamental numerals in other systems.
Examples:
"Hexadecimal numeration (Base 16) includes the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 but also A (=10), B (=11), C (=12), D (=13), E (=14), and F (=15). Sixteen itself is written as the two-digit number 10."
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Digit as a noun (units of measure, astronomy):
the apparent diameter of the sun or moon, as a measure of the totality of an eclipse.
Examples:
"A six-digit eclipse covers half the lunar surface."
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Digit as a noun (historical, _, units of measure):
A unit of length notionally based upon the width of an adult human finger, standardized differently in various places and times, the English digit of foot (about 1.9cm).
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Digit as a noun (units of measure, obsolete):
.
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Digit as a noun (anatomy):
A narrow extremity of the human hand or foot: a finger, thumb, or toe.
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Digit as a noun (zoology):
Similar or similar-looking structures in other animals.
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Digit as a noun (geometry, rare, obsolete):
of a circle.
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Digit as a verb (transitive):
To point at or point out with the finger.
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Thumb as a noun:
The short thick digit of the hand that for humans has the most mobility and can be made to oppose (moved to touch) all of the other fingers.
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Thumb as a noun (computing):
The part of a slider that may be moved linearly along the slider.
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Thumb as a noun (colloquial, Internet):
A thumbnail picture.
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Thumb as a verb (transitive):
To touch or cover with the thumb.
Examples:
"to thumb the touch-hole of a cannon"
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Thumb as a verb (transitive, with '''through'''):
To turn the pages of (a book) in order to read it cursorily.
Examples:
"I thumbed through the book and decided not to bother reading it all."
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Thumb as a verb (travel):
To hitchhike
Examples:
"So I started thumbin' back east, toward my hometown."
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Thumb as a verb:
To soil or wear with the thumb or the fingers; to soil, or wear out, by frequent handling.
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Thumb as a verb:
To manipulate (an object) with the thumb; especially, to pull back the hammer or open the cylinder of a revolver.
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Thumb as a verb:
To fire (a single action revolver) quickly by pulling the hammer while keeping the trigger depressed.